w^2+8w-27=0

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Solution for w^2+8w-27=0 equation:


Simplifying
w2 + 8w + -27 = 0

Reorder the terms:
-27 + 8w + w2 = 0

Solving
-27 + 8w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '27' to each side of the equation.
-27 + 8w + 27 + w2 = 0 + 27

Reorder the terms:
-27 + 27 + 8w + w2 = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 8w + w2 = 0 + 27
8w + w2 = 0 + 27

Combine like terms: 0 + 27 = 27
8w + w2 = 27

The w term is 8w.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8w + 16 + w2 = 27 + 16

Reorder the terms:
16 + 8w + w2 = 27 + 16

Combine like terms: 27 + 16 = 43
16 + 8w + w2 = 43

Factor a perfect square on the left side:
(w + 4)(w + 4) = 43

Calculate the square root of the right side: 6.557438524

Break this problem into two subproblems by setting 
(w + 4) equal to 6.557438524 and -6.557438524.

Subproblem 1

w + 4 = 6.557438524 Simplifying w + 4 = 6.557438524 Reorder the terms: 4 + w = 6.557438524 Solving 4 + w = 6.557438524 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + w = 6.557438524 + -4 Combine like terms: 4 + -4 = 0 0 + w = 6.557438524 + -4 w = 6.557438524 + -4 Combine like terms: 6.557438524 + -4 = 2.557438524 w = 2.557438524 Simplifying w = 2.557438524

Subproblem 2

w + 4 = -6.557438524 Simplifying w + 4 = -6.557438524 Reorder the terms: 4 + w = -6.557438524 Solving 4 + w = -6.557438524 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + w = -6.557438524 + -4 Combine like terms: 4 + -4 = 0 0 + w = -6.557438524 + -4 w = -6.557438524 + -4 Combine like terms: -6.557438524 + -4 = -10.557438524 w = -10.557438524 Simplifying w = -10.557438524

Solution

The solution to the problem is based on the solutions from the subproblems. w = {2.557438524, -10.557438524}

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